Displaying 20 results from an estimated 900 matches similar to: "Plotting a kriging on a map"
2009 Mar 10
1
North Arrow (.png file) on a Map
Hi list.
I would like to know how do I insert a North arrow, stored as a png file in
my computer, in a map? I found lots of post asking similar things, one of
them mentioned the pixmap package. The map was done using map() and
shapefiles (the code is below). I’m using the pixmap () and addlogo()
functions. Well I can import the png with pixmap() function (I guess, once
there’s no error message),
2009 May 07
1
Bubble Plot Over a Map
Hi everybody,
Well here is another doubt! I’m elaborating some maps, and I pretend to plot
over it the abundance of species. I could do that using points(), but I’d
like to use bubble() from sp package.
When trying to use bubble() I face the fallowing issue: When I call the
bubble function it overwrite everything I previously plotted. It doesn’t
happen with points (obviously), only with
2009 Apr 24
3
Text Contrast in a Plot
Hi List,
I would appreciate any suggestion on how can I make a text I’ve inserted in
a plot show some contrast? With this I mean that I have a white text on a
plot and I would like to make a tiny border around it in black, so even
being small sized and the entire graphic being small in the text page I’ll
insert it. It will be visible.
Well I tried inserting a box() function inside the text()
2011 Jan 05
1
Prediction error for Ordinary Kriging
Hi ALL,
Can you please help me on how to determine the prediction error for ordinary
kriging?Below are all the commands i used to generate the OK plot:
rsa2 <- readShapeSpatial("residentialsa", CRS("+proj=tmerc
+lat_0=39.66666666666666 +lon_0=-8.131906111111112 +k=1 +x_0=0 +y_0=0
+ellps=intl +units=m +no_defs"))
x2 <- readShapeSpatial("ptna2",
2003 Jan 17
3
kriging in R
Hi, all,
Have anyone used kringing included in R? How is it?
Does it handle anisotropy data well?
How does it compare with Kriging in Arc/Info? or other geostatistics
software customized to do kriging or other geostatistics functions?
I tried Easykriging, a geostatistics tool developed for Matlab. It has
very nice GUI, but it does not provide library which i can call in my programs.
so it is
2011 Oct 05
2
kriging shapefiles
Hi! Im new to R and I need to interpolate a shapefile using kriging. I've been able to plot/read the shapefile using the package maptools or rgdal. I've searched the internet for sample codes but most of the kriging codes that I've found done in R is done using txtfiles or CSVs. An example could be of great help. Thanks.
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2008 Jul 20
2
Indicator Kriging?
Hello All!
I like to do some indicator kriging with R.
So far I used geoR for simple and ordinary kriging.
Does anybody know which package I should use?
Thanks for your help!
Sascha!
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2006 Jan 17
3
Kriging for d>3
Hi,
I'm looking for software that can perform kriging on systems with dimensionality higher than 3, say d=5.
Are anyone aware of packages in R that can do this?
Thanks,
Eivind Sm??rgrav
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2010 Feb 17
1
Bayesian Block Kriging?
Hello,
I'm interested in doing Bayesian kriging using R. I see that the
package geoR has a function that will allow one to do this
(krige.bayes). However, my data are not in the form of points, but
rather they are blocks that represent spatial averages (i.e., the number
of fishing hooks per month in a given lat x long square). I am
therefore interested in treating the data as
2003 Oct 21
1
Indicator Kriging
Hi R-Users
Is there any package in R that work Indicator Kriging?
Or somebody is working in a link between GSLIB library in
FORTRAN for R?
Thank you very much for your help.
--
2010 Apr 07
1
kriging problem - very urgent
Hi everybody,
I have a longitude vector and a latitude one. Associated to these coordinates, i have a matrix with some data at some coordinates but not all.
Lon <- seq(136.025,144.975,0.05)
Lat <- rev(seq(-66.975,-65.525,0.05))
dim(z) <- c(Lon,Lat)
And i have tried to apply to these data a kriging function. But first i need to reshape these 3 variables to have a dataframe
2004 Feb 23
1
border of a polygon in contour.kriging - geoR
Dear all,
When a conventional kriging and then a contour plot is limited with a polygon (as possible with krige.conv and contour.kriging), the
polygon border is displayed in black by default.
> kc<-krige.conv(CZdata,loc=pred.grid,borders=czpoly,krige=krige.control(obj.m=ls))
> plot(CZcoord,xlab="x",ylab="y",type="n",asp=1)
>
2002 Mar 27
1
kriging C/C++ code
Hello to everybody !
I don't have a question directly connected with R, but it takes starting
point from the use of the R function Krig for kriging interpolation and
from the idea of making a different implemetation of the function for my
purposes.
Doas anyone know where can I find free C or C++ codes of kriging ?
As always, thanks a lot in advance,
Paola.
2003 Oct 31
2
Therotical basis of Kriging
hello
I want to know about therotical basis of Kriging in elemantary level.
I will appreciate if anyone sends me address,link,e-documents, etc..
kind regards
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2013 Apr 04
5
help with kriging interpolation
All,
I am new to using R and know some basics. I wish to use kriging in R to
do the following:
given data Y =f(X1,X2,X3,.....,Xn) --1000+ irregular measured data set.
I would like to be able to get a single value y given sinle input set
(x1,x2,x3,...xn)
A google search on this takes me lierally to the same example on involving
analysis with soil sampling and I cannot figure out how to
2012 Dec 17
1
How to make Ordinary Kriging using gstat predict?
Hi,
I am new in R and trying to implement an algorithm which makes ordinary kriging by using gstat library and the predict method.
I use the predict method as following:
First, I create an object g:
g <- gstat(id="tec", formula=TEC ~ 1, data=data) ## Create gstat object called g
And then I use this object in the predict.
p <- predict.gstat(g, model=mod, newdata=predGrid,
2011 Oct 04
1
shapefile kriging
I'm new to R and I'm working on point shapefiles. Is there a way that you could interpolate a shapefile via kriging in R using an attribute? All examples on the internet are using txt files and CSVs. Thanks a lot.
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2005 Dec 29
1
Help with Kriging
R Experts,
I'm looking for some help with the geoR package. I'm trying to krig
some data without using a global neighborhood. I would like to set my
moving neighborhood to a distance, say 100 meters, where I know my data
is spatially correlated. I have tried the ksline function, but that
only allows my moving neighborhood to be set to a number of data points.
But, since my data
2008 Jul 04
1
kriging problem(?)
Hei,
I have two spatial datasets Sa and Sb, both with lat-lon coordinates and
from same geographic area, but from different localities within the area
(independent samples). Sa is biotoc data, Sb is some environmental
parameter (fertility). I 'know' that Sb affects Sa, but wonder on which
scale. I tried different interpolations by creating different grids of Sb
(e.g. 20x20 and 100x100
2003 Sep 30
2
non-linear trends in kriging model
Hi
I am struggling to fit a non-linear trend using the
likfit function in geoR.
Specifically I want a sigmoidal function, something
like SSfpl in the nls package to fit the trend. But
it seems trend.spatial in geoR only works with lm or
glm type models.
Any ideas how I can specify the model to calculate the
kriging parameters using REML, including the
parameters of a sigmoidal trend function